Test from Los Angeles, Ca writes,
How long does the residual of Pro-Citra DL last?
How long does the spray work?
Pro-Citra DL Aerosol works best with direct contact for most insects. This means that it will most likely not provide a long lasting residual to help you control springtails but instead will only work when you spray the insects directly.
Answer last updated on: 10/20/2011